One of the most confusing and difficult in the world of video is the resolution. Most of us have digital cameras or camcorders, I heard the term megapixel is used as a comparison the most common resolution between different makes and models. We are also aware that more means better image quality, but many people do not know why. In the surveillance camera by television closed circuit in the world, however, most devices are analog, and its resolution is measured differently from what we are accustomed.
Analog resolution
When measured resolution analog, a range of TV does not have a defined number of pixels individual. In contrast, the term "TVL" returns the number of horizontal or vertical lines on the screen. Security cameras Devices is measured analogue TV, and most of them have between 420 and 580. The largest number of TV lines, the more information you enter. These types of cameras connected to a DVR or CCTV security through the coaxial cable video recorder.
Numerical
A pixel is the smallest element of a digital image. All are too far from the image of a website and go see the image clear of a group of colored squares – each of these places is an individual pixel. A megapixel (MP) is 1 million pixels and is a specific measure for the resolution Digital covering the field of video output.
Example: If the camera emits a signal which is 1280×1024 pixels, is mounted in arrow megapixel resolution of 1280 x 1024 = 1310720 pixels = 1.3 megapixels (MP).
The most common type of security cameras and digital IP cameras. These, like the digital camera at home, using strictly digital resolution. They use a network connection to act as a standalone device or connect to a network-based DVR (Digital Video Recorder) or NVR (Network Video Recorder). IP cameras have established and resolutions are approaching, and in some cases superior, 1-megapixel resolution, on average. Many of these cameras also support PoE (Power Over Ethernet) allowing them to be powered by the Ethernet cable used for network connectivity, and PTZ (Pan Tilt Zoom), which allows remote control Pan, tilt and zoom functions, if any.
Industry facilities and professionals increasingly moving to network-based CCTV equipment, because of the flexibility and scalability allows. Mass security camera viewing distance infrastructure are replace the old analog systems to date and increasing the pace will soon become the preferred solution in the industry.
Written By: Jon Hough
Sponsored By: ApexCCTV Security Cameras & Surveillance Equipment
For more great articles by seasoned physical security professionals, please visit The CCTV Blog.
About ApexCCTV:
Apex CCTV offers free, lifetime technical support on our products, a 110% pricematch guarantee, same day (in most cases) shipping & a 30 day return policy. Our sales & support staff offer unparalleled service & are the best in the industry.
[affmage source="tags"]KEYWORDS[/mage]
|
|
Def Leppard English Flag Coolie Cup $9.99 Keep your drink cold while rocking out with this coolie… |
|
|
Alex Super Baking set – 18 Piece Metal and Plastic Set $12.49 Measure, mix, prep, and bake some imaginary treats| This 18-piece set features a loaf pan, bear pan, heart pan, mixing bowl, rolling pin, whisk, measuring spoons and cup, pastry wheel, 2 star cookie cutters, 2 heart cookie cutter, and an oven mitt. Bon Appetit|… |
|
|
Set of 2 Heated Stainless Steel Travel Mugs Product Description Keep your favorite beverages hot at all times with this set of 2 stainless heated travel mugs. Plug the detachable cords into any standard 12v car adapter of your car truck or R/V. Durable stainless-steel construction and locking lids ensure a safe trip anywhere. Product Details 12V Heated Travel Mugs – Set of 2 ⢠Capacity: 16 ozs. ⢠Airtight l… |
|
|
Last Night Gus $1.99 … |
